Hoist



F. M. SLATER HoIsT Jan. 11 1927. 1,614,158

Filed oct. 1s, 1923 4 sheets-sheet 1 xw a INVENTOR HIS ATTORNEY Jan. 11 1927.

y 1,614,158 F. M. SLATER HOIST,V

Filed Oct. 18. 1925 4 Sheets-Sheet 2 2f, IH/(ul.

INVENTOR y Fret/dfer HIS ATTORN Y Jan. 11,1927. Y1,614,158

F. M. SLATER HOIST Filed Oct. 18, 1923 4`SheebS-Sheeb 3 INVENTOR BM s H15 ATTORN Jan. 11 1927. 1,614,158l

F. M. SLATER AHoIsT Filed oct. 18. -1923 4 Sheets-Smet 4 INVENTOR EeMJ/az'r HIS ATTORN Y Patented Jan. 1l, 1927.

'EEE STATE S PATENT f F El.

FRED M. SLATER; GF EASTON, PENN SYLVAIN A ASSIGNGB TO 1N@EPISOLIL-RAND COM- PANY, OF JERSE CTY, NEW' JERSEY, A GORPORATION'OF NEW JERSEY.

HOIST.`

Application lcd Gctober 18, 1923'.

This invention relates to hoists, but more particularly to-a Huid actuated rotary cylinder motor hoist, in which the cylinders are arranged longitudinally of the hoist drum.

5 Hoists of this character are desirable in numerous places for haulage and hoisting purposes, as for instance in hauling a scraper for slushing ore and for .ioisting timber in mines. lt is essential that these hoists be l0 as light as practicable, so that they may be conveniently transported from place to place, yet they must be sturdy and rugged, vto stand the hardest kind of-usage. Other essential characteristics are, that they be compact, simple in their construction, easily operated, and thoroughly protected from mud andv grit, which would tend to injure the moving parts.

One of the objects of this invention, is to enable a rotary cylinder motor to be placed within the drum of a hoist, in order to occupy less space and reduce the over-all length of the hoist.

Another object of this invention is to produce a hoist in which the motor cylinders are arranged longitudinally within thehoist drum, suitable gearing being provided for operatively connect-ingl the motor to` the drum.

A further object is to generally improve upon fluid operated rotary cylinder motor hoists, soas to cheapen thev cost of manufacture, reduce the number of parts and materially strengthen their construction.

Further objects of the invention will hereinafter appear, and the invention consists of the features of construction and combinations of elements as pointed out in the specitication, deiined in the appended claims and shown in the accompanyingy drawings, in which Figurel is a longitudinal'verticalsectional view of a hoist,

Figure 2 is an. end elevation partly in vertical section of the hoist shown in Figure l with the gear case and ring gear removed,

FigureV 3 is a transverse sectionalv view taken on the line 3-3 of Figure 1Ylooling in the direction of the arrows,

50 Figure A is a view similar to Figure 3,

showing a dilferent position of the throttle valve,

Figure 5 is an enlarged detail` fragmentary view partly in transverse section, taken on the line 5-5 of Figure 1, looking in the di- Serial No. 669,331'.

rection of the arrows, with the partsin a slightly different position, and

Figure 6 is a longitudinal4 sectional. plan view taken on the line 6-6 of Figure 5, lookingfin. the direction of the arrows.4

Referring to the dra-wings, the cylinders Q of a fluid actuated rotary cylinder motor are located within they winding drum. L, and have their axes parallel to the longitudinal axis ofV the drum, so that. the weightf and the over-all length are reduced. toA a minimum, and an extremely compact hoist is produced.. The pistons R. reciprocate-in the cylinders Q, andv this' reciprocatingmotion is translated into rotary motionr of thef70 winding drum L through suitablexconnecting rods, cranks, crank.'V shafts, and pinions, which mesh with a stationary ring e... In this manner, the motor rotates with thewinding drum, and in order to. distributevmotivet fluid to the cylinders Q, avsuitablefvalve is provided which also serves to: receive the pressurefluid exhausted. from the cylinders. A suitable throttle valve 2 serves to 'control the admissionv of motivefiuid to the motor.v and this valve alsoV operates as a reversing valveto control the direction of rotation of the winding drum L, so that the cable L may bewound upon or unwound from the drum;

Referring more particularly to the drawings, the base plate A, on, which the hoist is mounted, is providedwith a saddle clamp B, so that theV hoist may be vsupported on a column, cross bar or other support. In this instance, a support C is formed on the base plate A at one endI thereof and a head block D. containinga valve chest. D is preferably secured to thesupport C by the boltsgE. A gear case F is suitably secured to the base plate A by bolts F at the opposite end from the support C, and is in this instance/formed with an inwardly extending boss- Gr. A drum shaft H is supported atene end in the bossV G of the gear caseF and', atV the other end in the head bloc-irl), andv ispreferably held against rota-tion by a suitable ykey J. Nuts K are threaded onto the opposite ends of the shaft H inorder to prevent endwise movement of' the shaft.

A drum L isy rotatably mounted onr the shaft H and is in this instanceformed with external circuinferentiall flangesO and P at the opposite ends thereof. A cable L is preferably secured to the drum-Lby.- ascrew L2 so that the cable may be Wound upon or unwound from the drum according to the direction in Which the drum is rotated. ln this instance, the interior of the drum L is formed With a plurality of longitudinally arranged cylinders Q, preferably four in number, in which pistons R are adapted to reciprocate. Suitable connecting` rods S connect the Wrist pins T of the pistons R with v:ranks U on the crank shafts V.

.In this instance, the crank siafts V are mounted in anti-friction bearings Vf, which are secured to a bearing plate X by caps Y and bolts Z. The bolts Z also secure the bearing plate to the drum flange l), so that the drum and bearing plate rotate together. The crank shafts V are preferably formed With suitable counteryveights a, and nuts 7o on one end of the crank shafts prevent end- Wise movement of the crank shafts. A bevel pinion c is preferably secured to each crank shaft V by a suitable key (l, and each bevel pinion meshes with a stationary beveled ring gear e, Which is in this instance secured to the gear casing F by bolts f, washers e, and nuts 71.. As the pistons R reciprocate in the cylinders Q, rotation is imparted to the bevelV pinions c through the cranks U and crank shafts V, and the drum L is caused to revolve as the bevel pinions rotate upon the stationary ring gear e.

A suitable valve is provided to distribute motive fluid to the cylinders Q, and in this instance, the ends of the valve j are closed by the caps k and o suitably secured to the valve and forming a part thereof. rlhe cap o is provided With the bushed port in and the port g, one of Which ports serves as an inlet port When the other acts as an exhaust port, as Will be hereinafter described. The circumference of the valve y' is preferably formed With a series of ports fr and series of ports s, Which are separated from each other by a tortuous Web t, so that the ports r alternate With the ports s around the valve, and all the ports r communicate through a passage g With the port- Q in the cap 07 and all the ports s communicate through a passage p with the bushed port p in the cap 0. The distributing valve j may be integrally formed With the valve chest D or stationary shaft H, if desired, but in this insistance is a separate valve and a pin j in the head block D is adapted to extend into the valve cap 0 for centering the valve and holding iU sta-` tionary on the shaft H. ln order to take up Wear between the drum L and distributing valve j, a bushing o is preferably secured to the drum for rotation therewith. and is formed With ports w which are al v the passages u, four in number, leading to the motor cylinders Q.

Let it be assumed that the drum L is rotating in the direction of the arrow a; shovfn in Figure 5, and motive fluid is admitted 'through the port p in the valve cap 0, then the ports s, which communicate With the port p, Will serve to admit motive fluid to the cylinders Q through the ports w in the bushing e and passages u formed in the drum. il. port s at the right hand of Figure is adinitti f* motive fluid to a cylinder Q, While a port i', which is diametrically opposite from the admission port s, is exhausting pressure fluid from one lof the cylinders. As all of the ports r are in communication With Lhe port g, in the valve cap 0, the port 9V in this instance ser 7es as exhaust port. lhe cylinder passage u at the upper portion of Figure 5 is cut off, but about to be brought into registration With an admission port s, While the passage u at the lower portion of the figure is also cut off, but about to register with an exhaust port r. As the drum revolves about the valve y', there is iirst admission, then cut off, and finally exhaust from each cylinder in succession. A port y in each cylinder Q serves as an auxiliary exhaust port when uncovered by a piston R and pressure fluid is exhausted into the drinn and passes to atmosphere through the ports e in the gear case F. By admitting the supply of motive fluid through the port g instead ef through the port p, the direction of rotation of the drum Will be reversed. rEhe distributing valve j is in this instance formed With fourteen of the ports r and s seven in each series, and each piston makes seven complete strokes for each revolution of the drum. lt is to be understood, hoyvever, that the number and position of the ports may be changed, if desired.

ln order to control the admission of motive fluid to the motor and the direction of rotation of the drum L, a suitable throttle valve 2 is slidable in the valve chest D and is in this instance formed with a hollow bore 3 through Which motive fluid is adapted to pass to thn motor. rlhe valve 2 is provided With heads il at the opposite ends thereof controlling the passages 15 and 16 in the head block, which lead to the ports p and q respectively in the distributing valve of the motor, and in this instance, the heads are formed with serrations 5 to permit gradual control of the pressure fluid. A rack 6 on the valve engages a toothed sector 7 provided ivith a valve lever S by means of which the valve is manipulated. Springs 9 and l() between the ends of the valve 2 and plugs il and 'i9 respectively oppose the movement of the valve in either direction. Motive fluid may be supplied through either plug from the pipe 13, and the opposite plug closed by a suitable cap 11i.

In the position of the valve shown in Figure 3, motive fluid passes to the motor through the passage l5.y and pressure fluid is exhausted from the motor through t-he l assage 16 and thence to atmosphere through thefvalve' chambery 34e. By: actuating the motor whereby thev drum is=4 drivenybyfthe handle-8fin1 ther-opposite direoti on, as4 shown in Figured `thevdirection of-liotation of the drum L will be reversed andi l'motivefiuid passes` through the:l hollow bore f. 3 of 4the throttle i valve' 2- tol the. motor through. the passage` 1.6, and: :pressurefluid is-ehausted front the motor,` through I the .passage l5. vand thence to: atmosphere`r through the. chamber 34x In.` orden to. supply .lubricant to the rotatingp-arts of the hoist, asuitablereservoir 1.7 isrformed: in :the head: blockfD, and` is provided: with a: plurality. of iilling'openings 18, closedlby'the.plugs-15),.so1that lubricant: may beconveniently supplied to the `reservoir irrespectiveofffthe position of vthe hoist. A passage 2O1isformed inthe stationary shaft- H, :andrcommunicateswith a spiral; groove v2l on. the outer-surface of. the shaf'uso that the bearingysurface ofl the drumy may.: receive adequate lubrication. Lubricant' willi `also be thrown or carried to the anti-friction thrust bearingA 22on.the shaft H and to the cylinders Q through the ports 23. Sonie lubricant will be b-lown upon the gears and ring gear, due to the action of the pressure fluid within the drum.

Any suitable brake may be provided for the drum L, and in this instance, a brake lining 24, preferably riveted to a metal band 25, surrounds the drum flange rim P and one end of the brake band is secured to a shoe 26, on which is pivoted a turnbuckle 27. The opposite end of the brake band is secured to a shoe 28, on which is pivoted a brake lever or handle 29, which carries a screw 30, which is threaded into the turn buckle 27. A suitable stop is provided for the brake band, and in this instance a shoe 31 is secured to the brake band and is formed with a lug 32, which enters a recess 33 in the base plate A. Pressure exerted upon the lever 29 tightens the brake on the drum. L, and controls the rotation of the drum. By adjusting the screw 30 in the turnbuckle 27, the brake may be tightened to compensate for wear.

I am .not to be understood as limiting the invention to the particular device and construction shown in the drawings, and described in the specification, since those skilled in the art may devise equivalentconstructions within the spirit of the invention, as defined in the appended claims.

I claim:

l. In a fluid actuated rotary cylinder motor hoist, the combination of a support, a rotary winding drum on said support, a rotary cylinder motor within the drum having the longitudinal axes of the cylinders parallel to the longitudinal axis of the drum, a gear outside the drum and pinions bodily rotating with the drum and meshing with said gear and connected to be driven by the motor.

2. In a fluid actuatedA rotaryl cylinder motor hoist, thecombination ozta support, a rotary winding drum on Asaid support,:a rotary cylinder motor within the drum having longitudinally arranged cylinders formed in the drum, av valve for distributing motive fluid to saidv cylinders, a stationary gear carried by said support and pinions bodily rotating with the drum and meshing with said gear and. connected toV be driven by the motor whereby the drumis driven' by the motor.

3. In a fluid. actuatedA rotary cylinder motor hoist, the combination ofia lrotary winding drum, a rotary cylinder motor within the drum having the longitudinali axes. of the cylinders parallel to theA longitudinal aXis of the drum, a valve'ior distributing motivel fluid to said cylinders, pis-tons adapted to. reciprocate in said cylinders, .a stationary ring gear outsidethe drum, pinions bodily rotating with the drunr-an'd meshing with said gear and connected to be driven by said motor whereby the drum is driven by the motor, and a throttle valve for controlling the admission of motive fluid to the motor and the direction of rotation of the drum.

4l. In a fluid actuated rotary cylinder motor hoist, the combination of a support, a rotary winding drum on said support, a

rotary cylinder motor within the drum' having longitudinally arranged cylinders formed in the drum, a stationary valve for distributing motive fluid to said cylinders, pistons `adapted to reciprocate in said cylinders, a stationary ring gear carried by said support outside the drum, pinions bodily 'rotating with the drum and meshing with said gear and connected to be driven by the motor whereby the drum is driven by the motor and a manually operable throttle valve for controlling the admission of motive fluid to said motor and the direction of rotation of the drum.

5. In a fluid actuated rotary cylinder motor hoist, the combination of a support, a rotary winding drum on said support, a rotary cylinder motor comprising cylinders having their longitudinal axes parallel to the longitudinal axis of the drum, pistons adapted to reciprocate in said cylinders, a bearing plate carried by said drum, crank shafts having bearings on said bearing plate, cranks on said crank shafts, connecting rods connecting said pistons and cranks, pinions carried by said crank shafts, a valve for distributing motive fluid to said cylinders, a ring gear outside said drum with which said pinions mesh and a throttle valve for controlling the admission of mo- 6. In a fluid actuated rotary cylinder motor hoist, the combination of a base plate, a support on'one end of said base plate, a head block on said support, a gear case on the opposite end of said base plate, a shett supported at its ends in said head block and gear Case, a rotary winding drinn on said shaft, a cable on said winding drum, a rotary Cylinder motor within the druin having the longitudinal axes ot' the cylinders parallel to the longitudinal aXis 01" the drum, a gear Carried by said gear case outside the drum and pinions bodily rotating with the druin and meshing with said gear and connected to be driven by the motor whereby the drum is driven by the motor.

7. In a lluid actuated rotary Cylinder inotor hoist, the combination ot a base plate, a support on one end of said plate, a gear ease on the opposite end ot said base plate having a hollow inwardly extendingboss, a head block on said support, a shalt supported at its ends in said head block and boss, a rotary winding` druin on said shaft,

a cable on said winding drum, a rotary cylinder motor within the drum having the longitudinal axes of the Cylinders parallel to the longitudinal axis ot' the drinn, pistons in said cylinders, a bearing plat-e carried by said drum, Crank shafts supported on said bearing plate, cranks on said crank shafts, connecting rods for connecting,` said pistons and cranks, pinions carried by said Crank shafts, a stationary ring` gear carried by said gear oase with which said pinions mesh, a stationary distributing valve tor distributing rnotive fluid to said Cylinders, a manually operable throttle valve in said head block for controlling the admission ot inotive fluid to said cylinders and the direct-ion of rotation ot said drum, a lubricant reservoir in Said head block for distributing lubri- Cant to the operative parts of the hoist and a manually operable brake l'or said drum.

In testimony whereof l have signed this specification.

FRED M. SLATEB. 

